I noticed that Microsoft Edge browser does not load my LTI tool in Moodle when using the Edge browser. Firefox and Chrome seem to work fine. Here are the console errors.
This Internet Explorer instance does not have the following capabilities: privateNetworkClientServer
SEC7111: HTTPS security is compromised by ms-appx-web://microsoft.microsoftedge/assets/errorpages/dnserror.html
SEC7111: HTTPS security is compromised by ms-appx-web://microsoft.microsoftedge/assets/errorpages/ErrorPageStyles.css
SEC7111: HTTPS security is compromised by ms-appx-web://microsoft.microsoftedge/Assets/ErrorPages/ErrorPageScripts.js
SEC7111: HTTPS security is compromised by ms-appx-web://microsoft.microsoftedge/assets/Fonts/BrowserMDL.ttf#Browser MDL2 Assets
Carl